Consider the following data from a small bookstore.
|
Number of sales people working
|
Sales (in $1000)
|
|
2
|
10
|
|
3
|
11
|
|
7
|
13
|
|
9
|
14
|
|
10
|
18
|
|
10
|
20
|
|
12
|
20
|
|
15
|
22
|
|
16
|
22
|
|
20
|
26
|
|
x = 10.4
SD1x2 = 5.64
|
y = 17.6
SD1y2 = 5.34
|
a) Prepare a scatterplot of Sales against Number of sales people working.
b) What can you say about the direction of the association?
c) What can you say about the form of the relationship?
d) What can you say about the strength of the relationship?
e) Does the scatterplot show any outliers?